1、 IEC 60811-410 Edition 1.0 2012-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Electric and optical fibre cables Test methods for non-metallic materials Part 410: Miscellaneous tests Test method for copper-catalyzed oxidative degradation of polyolefin insulated conductors Cbles lectriques et fibres
2、optiques Mthodes dessai pour les matriaux non-mtalliques Partie 410: Essais divers Mthode dessai pour la mesure de la dgradation par oxydation catalytique par le cuivre des conducteurs isols aux polyolfines IEC60811-410:2012 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2012 IEC, Geneva, Switzer
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16、 ligne. Service Clients - webstore.iec.ch/csc Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 60811-410 Edition 1.0 2012-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Electric and optical fibre cables Test methods for no
17、n-metallic materials Part 410: Miscellaneous tests Test method for copper-catalyzed oxidative degradation of polyolefin insulated conductors Cbles lectriques et fibres optiques Mthodes dessai pour les matriaux non-mtalliques Partie 410: Essais divers Mthode dessai pour la mesure de la dgradation par
18、 oxydation catalytique par le cuivre des conducteurs isols aux polyolfines INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE L ICS 29.035.01; 29.060.20 PRICE CODE CODE PRIX ISBN 978-2-88912-972-0 Registered trademark of the International Electrotechnical Commission
19、 Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 60811-410 IEC:2012 CONTENTS FOREWORD . 3 INTRODUCTIO
20、N . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 6 4 Test method . 6 4.1 General . 6 4.2 Apparatus 6 4.3 Sample and test pieces preparation. 7 4.4 Test procedure 7 4.5 Measurements . 8 5 Test report 8 Annex A (normative) Instrument calibration 10 Bibliography 11 Figure 1 Evalua
21、tion of OIT from recorded-time-based thermogram . 9 Figure A.1 Representative melting endothermic for indium . 10 60811-410 IEC:2012 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ ELECTRIC AND OPTICAL FIBRE CABLES TEST METHODS FOR NON-METALLIC MATERIALS Part 410: Miscellaneous tests Test method for c
22、opper-catalyzed oxidative degradation of polyolefin insulated conductors FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote inte
23、rnational co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereaft
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30、ation. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, o
31、r for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the corre
32、ct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60811-410 has been prepared
33、by IEC technical committee 20: Electric cables. This Part 410 of IEC 60811 cancels and replaces Annex B of IEC 60811-4-2:2004, which is withdrawn. Full details of the replacements are shown in Annex A of IEC 60811-100:2012. There are no specific technical changes with respect to the previous edition
34、, but see the Foreword to IEC 60811-100:2012. 4 60811-410 IEC:2012 The text of this standard is based on the following documents: FDIS Report on voting 20/1294/FDIS 20/1343/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the abov
35、e table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. This part of IEC 60811 shall be used in conjunction with IEC 60811-100. A list of all the parts in the IEC 60811 series, published under the general title Electric and optical fibre cables Test methods for
36、non-metallic materials, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publi
37、cation will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 60811-410 IEC:2012 5 INTRODUCTION The IEC 60811 series specifies the test methods to be used for testing non-metallic materials of all types of cables. These test methods are intended to be referenced in standards for
38、cable construction and for cable materials. NOTE 1 Non-metallic materials are typically used for insulating, sheathing, bedding, filling or taping within cables. NOTE 2 These test methods are accepted as basic and fundamental and have been developed and used over many years principally for the mater
39、ials in all energy cables. They have also been widely accepted and used for other cables, in particular optical fibre cables, communication and control cables and cables for ships and offshore applications. 6 60811-410 IEC:2012 ELECTRIC AND OPTICAL FIBRE CABLES TEST METHODS FOR NON-METALLIC MATERIAL
40、S Part 410: Miscellaneous tests Test method for copper-catalyzed oxidative degradation of polyolefin insulated conductors 1 Scope This Part 410 of IEC 60811 gives the procedure for copper-catalyzed oxidative degradation of a polyolefin, which is typically used for insulation in communication cables.
41、 Full test conditions, such as temperature, duration, etc. and full test requirements are not specified in this standard; it is intended that they should be specified by the standard dealing with the relevant type of cable. 2 Normative references The following documents, in whole or in part, are nor
42、matively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60811-100:2012, Electric and optical fibre cables Test m
43、ethods for non-metallic materials Part 100: General 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60811-100 apply. 4 Test method 4.1 General The need for a manufacturer to monitor his cable production to ensure that it has adequate resistance to ox
44、idation is well established. The Oxidation Induction Time (OIT) test has been found suitable for monitoring both raw materials and cables for compliance with this requirement, once suitable materials have been selected. The OIT test is not suitable for the selection of materials. For this purpose, l
45、ong-term thermal ageing tests are preferred. 4.2 Apparatus For the purposes of this test, the different equipment used is as follows: a) A differential thermal analyser or differential scanning calorimeter, capable of heating at rates of up to at least (20 1) K/min and maintaining the test temperatu
46、re isothermally within 0,2 K and of automatic recording of differences in temperature (or differences in heat transfer) between the sample and a reference material to the required sensitivity and precision. b) A recorder capable of displaying heat flow or temperature difference on the Y-axis, and ti
47、me on the X-axis. The time base shall be accurate to 1 % and be readable to 0,1 min. c) A gas-selector switch and regulators for high-purity nitrogen and oxygen. 60811-410 IEC:2012 7 d) An analytical balance capable of weighing 30 g, and readable and repeatable to 0,1 mg. e) Test pieces holders: alu
48、minium holders, each of approximately 6 mm to 7 mm in diameter, or of similar dimensions as supplied by the manufacturer of the instrument. 4.3 Sample and test pieces preparation From a sample of the cable, prepare an appropriate number, e.g. four test pieces of different colours, of approximately 4
49、 mm length containing the core. The test pieces shall be cut from an insulated core to yield 3 mg to 5 mg of insulating material. Insert one test piece in an aluminium holder. 4.4 Test procedure Before carrying out a test series, the instrument shall be calibrated and prepared as described in Annex A. Open valves on both the nitrogen and oxygen gas cylinders. Place the gas selector switch
